Date:September 14, 2009
L.D
Big Idea: Plan out what you need before you start any trip. When you go to any place before you leave, check you have every thing.
Essential Question: INV 2 Essential Question: What are some situations that we can describe as variable
Notes from class:
Coordinate Graph: a way to show the relationship between 2 variables
Independent Variable: an independent variable determines the value of the dependent variable
Dependent variable: a Dependent variable depends on the value of the independent variable
No examples on the white board.
Methods and strategies discussed in class:
We use a table for us to see the exact information, numbers
We use a graph so you don't need to calculate differences
My own questions:
when do need to connect points on a graph ? Why?
why do we need to put details in a table next to a title such as Time (hr.), distance (miles)?
Problem 2.3
A.Would it make sense to connect the points on this graph? Explain.
No, because the graph is meant to increase or stop not to decrease. If we connect the points it will be confusing. It will be better we just leave them.
B.Make a table of (time and Distance) data from the information in the graph.
Time (hours)
Distance(miles)
0
0
0.5
8
1.0
12
1.5
21
2.0
21
2.5
30
3.0
21
3.5
31
4.0
38
4.5
49
5.0
49
5.5
57
6.0
62
6.5
72
7.0
74
7.5
81
C.What do you think happened between hours 2 and 4? Between hours 1.5 and 2?
They went 9 miles distance and the riders remembered that they left something so they went back to get and that is where in the table it decreased then after they went back they began to progress again.
D.Which method of displaying the (time, Distance) data helps you see the changes better, a table or a graph? Explain your choice.
I would rather use the graph because I don’t have to calculate the difference I can see the difference by looking at the points of I can see the difference between the points.
Problem 1.2 Follow-up
Use the graph to determine the total diatance the riders traveled on day 3. Explain how you determined your answer.
The total distance traveled on day 3 is 90 miles. What I did was that I added 9 miles becuase in their 3rd hour they did not stop they were still pedalling, so when they were going backward the that distance also counted.
L.D
Big Idea: Plan out what you need before you start any trip. When you go to any place before you leave, check you have every thing.
Essential Question: INV 2 Essential Question: What are some situations that we can describe as variable
Notes from class:
No examples on the white board.
Methods and strategies discussed in class:
My own questions:
A.Would it make sense to connect the points on this graph? Explain.
No, because the graph is meant to increase or stop not to decrease. If we connect the points it will be confusing. It will be better we just leave them.
B.Make a table of (time and Distance) data from the information in the graph.
They went 9 miles distance and the riders remembered that they left something so they went back to get and that is where in the table it decreased then after they went back they began to progress again.
D.Which method of displaying the (time, Distance) data helps you see the changes better, a table or a graph? Explain your choice.
I would rather use the graph because I don’t have to calculate the difference I can see the difference by looking at the points of I can see the difference between the points.
Problem 1.2 Follow-up
Use the graph to determine the total diatance the riders traveled on day 3. Explain how you determined your answer.
The total distance traveled on day 3 is 90 miles. What I did was that I added 9 miles becuase in their 3rd hour they did not stop they were still pedalling, so when they were going backward the that distance also counted.